NetBSD-5.0.2/usr.sbin/pwd_mkdb/pwd_mkdb.c
/* $NetBSD: pwd_mkdb.c,v 1.34 2008/07/21 13:36:59 lukem Exp $ */
/*
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Portions Copyright(C) 1994, Jason Downs. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(lint)
__COPYRIGHT("@(#) Copyright (c) 2000\
The NetBSD Foundation, Inc. All rights reserved.\
Copyright (c) 1991, 1993, 1994\
The Regents of the University of California. All rights reserved.");
__SCCSID("from: @(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94");
__RCSID("$NetBSD: pwd_mkdb.c,v 1.34 2008/07/21 13:36:59 lukem Exp $");
#endif /* not lint */
#if HAVE_NBTOOL_CONFIG_H
#include "compat_pwd.h"
#else
#include <pwd.h>
#endif
#include <sys/param.h>
#include <sys/stat.h>
#include <db.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#define MAX_CACHESIZE 8*1024*1024
#define MIN_CACHESIZE 2*1024*1024
#define PERM_INSECURE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
#define PERM_SECURE (S_IRUSR | S_IWUSR)
#if HAVE_NBTOOL_CONFIG_H
static const char __yp_token[] = "__YP!";
#else
/* Pull this out of the C library. */
extern const char __yp_token[];
#endif
HASHINFO openinfo = {
4096, /* bsize */
32, /* ffactor */
256, /* nelem */
0, /* cachesize */
NULL, /* hash() */
0 /* lorder */
};
#define FILE_INSECURE 0x01
#define FILE_SECURE 0x02
#define FILE_ORIG 0x04
static char *pname; /* password file name */
static char prefix[MAXPATHLEN];
static char oldpwdfile[MAX(MAXPATHLEN, LINE_MAX * 2)];
static char pwd_db_tmp[MAX(MAXPATHLEN, LINE_MAX * 2)];
static char pwd_Sdb_tmp[MAX(MAXPATHLEN, LINE_MAX * 2)];
static int lorder = BYTE_ORDER;
static int clean;
void bailout(void);
void cp(const char *, const char *, mode_t);
int deldbent(DB *, const char *, int, void *);
void error(const char *);
int getdbent(DB *, const char *, int, void *, struct passwd **);
void inconsistancy(void);
void install(const char *, const char *);
int main(int, char **);
void putdbents(DB *, struct passwd *, const char *, int, const char *, int,
int, int);
void putyptoken(DB *, const char *);
void rm(const char *);
int scan(FILE *, struct passwd *, int *, int *);
void usage(void);
void wr_error(const char *);
int
main(int argc, char *argv[])
{
int ch, makeold, tfd, lineno, found, rv, hasyp, secureonly;
struct passwd pwd, *tpwd;
char *username;
DB *dp, *edp;
FILE *fp, *oldfp;
sigset_t set;
int dbflg, uid_dbflg, newuser, olduid, flags;
char buf[MAXPATHLEN];
struct stat st;
u_int cachesize;
prefix[0] = '\0';
makeold = 0;
oldfp = NULL;
username = NULL;
hasyp = 0;
secureonly = 0;
found = 0;
newuser = 0;
dp = NULL;
cachesize = 0;
while ((ch = getopt(argc, argv, "BLc:d:psu:v")) != -1)
switch (ch) {
case 'B': /* big-endian output */
lorder = BIG_ENDIAN;
break;
case 'L': /* little-endian output */
lorder = LITTLE_ENDIAN;
break;
case 'c':
cachesize = atoi(optarg) * 1024 * 1024;
break;
case 'd': /* set prefix */
strlcpy(prefix, optarg, sizeof(prefix));
break;
case 'p': /* create V7 "file.orig" */
makeold = 1;
break;
case 's': /* modify secure db only */
secureonly = 1;
break;
case 'u': /* modify one user only */
username = optarg;
break;
case 'v': /* backward compatible */
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
if (username != NULL)
if (username[0] == '+' || username[0] == '-')
usage();
if (secureonly)
makeold = 0;
/*
* This could be changed to allow the user to interrupt.
* Probably not worth the effort.
*/
sigemptyset(&set);
sigaddset(&set, SIGTSTP);
sigaddset(&set, SIGHUP);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGQUIT);
sigaddset(&set, SIGTERM);
(void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
/* We don't care what the user wants. */
(void)umask(0);
if (username == NULL)
flags = O_RDWR | O_CREAT | O_EXCL;
else
flags = O_RDWR;
pname = *argv;
/* Open the original password file */
if ((fp = fopen(pname, "r")) == NULL)
error(pname);
openinfo.lorder = lorder;
if (fstat(fileno(fp), &st) == -1)
error(pname);
if (cachesize) {
openinfo.cachesize = cachesize;
} else {
/* Tweak openinfo values for large passwd files. */
cachesize = st.st_size * 20;
if (cachesize > MAX_CACHESIZE)
cachesize = MAX_CACHESIZE;
else if (cachesize < MIN_CACHESIZE)
cachesize = MIN_CACHESIZE;
openinfo.cachesize = cachesize;
}
/* Open the temporary insecure password database. */
if (!secureonly) {
(void)snprintf(pwd_db_tmp, sizeof(pwd_db_tmp), "%s%s.tmp",
prefix, _PATH_MP_DB);
if (username != NULL) {
snprintf(buf, sizeof(buf), "%s" _PATH_MP_DB, prefix);
cp(buf, pwd_db_tmp, PERM_INSECURE);
}
dp = dbopen(pwd_db_tmp, flags, PERM_INSECURE, DB_HASH,
&openinfo);
if (dp == NULL)
error(pwd_db_tmp);
clean |= FILE_INSECURE;
}
/* Open the temporary encrypted password database. */
(void)snprintf(pwd_Sdb_tmp, sizeof(pwd_Sdb_tmp), "%s%s.tmp", prefix,
_PATH_SMP_DB);
if (username != NULL) {
snprintf(buf, sizeof(buf), "%s" _PATH_SMP_DB, prefix);
cp(buf, pwd_Sdb_tmp, PERM_SECURE);
}
edp = dbopen(pwd_Sdb_tmp, flags, PERM_SECURE, DB_HASH, &openinfo);
if (!edp)
error(pwd_Sdb_tmp);
clean |= FILE_SECURE;
/*
* Open file for old password file. Minor trickiness -- don't want to
* chance the file already existing, since someone (stupidly) might
* still be using this for permission checking. So, open it first and
* fdopen the resulting fd. The resulting file should be readable by
* everyone.
*/
if (makeold) {
(void)snprintf(oldpwdfile, sizeof(oldpwdfile), "%s.orig",
pname);
if ((tfd = open(oldpwdfile, O_WRONLY | O_CREAT | O_EXCL,
PERM_INSECURE)) < 0)
error(oldpwdfile);
clean |= FILE_ORIG;
if ((oldfp = fdopen(tfd, "w")) == NULL)
error(oldpwdfile);
}
if (username != NULL) {
uid_dbflg = 0;
dbflg = 0;
/*
* Determine if this is a new entry.
*/
if (getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYNAME, username, &tpwd))
newuser = 1;
else {
newuser = 0;
olduid = tpwd->pw_uid;
}
} else {
uid_dbflg = R_NOOVERWRITE;
dbflg = R_NOOVERWRITE;
}
/*
* If we see something go by that looks like YP, we save a special
* pointer record, which if YP is enabled in the C lib, will speed
* things up.
*/
for (lineno = 0; scan(fp, &pwd, &flags, &lineno);) {
/*
* Create original format password file entry.
*/
if (makeold) {
(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos,
pwd.pw_dir, pwd.pw_shell);
if (ferror(oldfp))
wr_error(oldpwdfile);
}
if (username == NULL) {
/* Look like YP? */
if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-')
hasyp++;
/* Warn about potentially unsafe uid/gid overrides. */
if (pwd.pw_name[0] == '+') {
if ((flags & _PASSWORD_NOUID) == 0 &&
pwd.pw_uid == 0)
warnx("line %d: superuser override "
"in YP inclusion", lineno);
if ((flags & _PASSWORD_NOGID) == 0 &&
pwd.pw_gid == 0)
warnx("line %d: wheel override "
"in YP inclusion", lineno);
}
/* Write the database entry out. */
if (!secureonly)
putdbents(dp, &pwd, "*", flags, pwd_db_tmp,
lineno, dbflg, uid_dbflg);
continue;
} else if (strcmp(username, pwd.pw_name) != 0)
continue;
if (found) {
warnx("user `%s' listed twice in password file",
username);
bailout();
}
/*
* Ensure that the text file and database agree on
* which line the record is from.
*/
rv = getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYNUM, &lineno, &tpwd);
if (newuser) {
if (rv == 0)
inconsistancy();
} else if (rv == -1 ||
strcmp(username, tpwd->pw_name) != 0)
inconsistancy();
else if (olduid != pwd.pw_uid) {
/*
* If we're changing UID, remove the BYUID
* record for the old UID only if it has the
* same username.
*/
if (!getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYUID, &olduid,
&tpwd)) {
if (strcmp(username, tpwd->pw_name) == 0) {
if (!secureonly)
deldbent(dp, pwd_db_tmp,
_PW_KEYBYUID, &olduid);
deldbent(edp, pwd_Sdb_tmp,
_PW_KEYBYUID, &olduid);
}
} else
inconsistancy();
}
/*
* If there's an existing BYUID record for the new UID and
* the username doesn't match then be sure not to overwrite
* it.
*/
if (!getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYUID, &pwd.pw_uid,
&tpwd))
if (strcmp(username, tpwd->pw_name) != 0)
uid_dbflg = R_NOOVERWRITE;
/* Write the database entries out */
if (!secureonly)
putdbents(dp, &pwd, "*", flags, pwd_db_tmp, lineno,
dbflg, uid_dbflg);
putdbents(edp, &pwd, pwd.pw_passwd, flags, pwd_Sdb_tmp,
lineno, dbflg, uid_dbflg);
found = 1;
if (!makeold)
break;
}
if (!secureonly) {
/* Store YP token if needed. */
if (hasyp)
putyptoken(dp, pwd_db_tmp);
/* Close the insecure database. */
if ((*dp->close)(dp) < 0)
wr_error(pwd_db_tmp);
}
/*
* If rebuilding the databases, we re-parse the text file and write
* the secure entries out in a separate pass.
*/
if (username == NULL) {
rewind(fp);
for (lineno = 0; scan(fp, &pwd, &flags, &lineno);)
putdbents(edp, &pwd, pwd.pw_passwd, flags, pwd_Sdb_tmp,
lineno, dbflg, uid_dbflg);
/* Store YP token if needed. */
if (hasyp)
putyptoken(edp, pwd_Sdb_tmp);
} else if (!found) {
warnx("user `%s' not found in password file", username);
bailout();
}
/* Close the secure database. */
if ((*edp->close)(edp) < 0)
wr_error(pwd_Sdb_tmp);
/* Install as the real password files. */
if (!secureonly)
install(pwd_db_tmp, _PATH_MP_DB);
install(pwd_Sdb_tmp, _PATH_SMP_DB);
/* Install the V7 password file. */
if (makeold) {
if (fflush(oldfp) == EOF)
wr_error(oldpwdfile);
if (fclose(oldfp) == EOF)
wr_error(oldpwdfile);
install(oldpwdfile, _PATH_PASSWD);
}
/* Set master.passwd permissions, in case caller forgot. */
(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
if (fclose(fp) == EOF)
wr_error(pname);
/*
* Move the temporary master password file LAST -- chpass(1),
* passwd(1), vipw(8) and friends all use its existence to block
* other incarnations of themselves. The rename means that
* everything is unlocked, as the original file can no longer be
* accessed.
*/
install(pname, _PATH_MASTERPASSWD);
exit(EXIT_SUCCESS);
/* NOTREACHED */
}
int
scan(FILE *fp, struct passwd *pw, int *flags, int *lineno)
{
static char line[LINE_MAX];
char *p;
int oflags;
if (fgets(line, sizeof(line), fp) == NULL)
return (0);
(*lineno)++;
/*
* ``... if I swallow anything evil, put your fingers down my
* throat...''
* -- The Who
*/
if ((p = strchr(line, '\n')) == NULL) {
warnx("line too long");
errno = EFTYPE; /* XXX */
error(pname);
}
*p = '\0';
if (strcmp(line, "+") == 0)
strcpy(line, "+:::::::::"); /* pw_scan() can't handle "+" */
oflags = 0;
if (!pw_scan(line, pw, &oflags)) {
warnx("at line #%d", *lineno);
errno = EFTYPE; /* XXX */
error(pname);
}
*flags = oflags;
return (1);
}
void
install(const char *from, const char *to)
{
char buf[MAXPATHLEN];
char errbuf[BUFSIZ];
int sverrno;
snprintf(buf, sizeof(buf), "%s%s", prefix, to);
if (rename(from, buf)) {
sverrno = errno;
(void)snprintf(errbuf, sizeof(errbuf), "%s to %s", from, buf);
errno = sverrno;
error(errbuf);
}
}
void
rm(const char *victim)
{
if (unlink(victim) < 0)
warn("unlink(%s)", victim);
}
void
cp(const char *from, const char *to, mode_t mode)
{
static char buf[MAXBSIZE];
int from_fd, rcount, to_fd, wcount, sverrno;
if ((from_fd = open(from, O_RDONLY, 0)) < 0)
error(from);
if ((to_fd = open(to, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0)
error(to);
while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
wcount = write(to_fd, buf, rcount);
if (rcount != wcount || wcount == -1) {
sverrno = errno;
(void)snprintf(buf, sizeof(buf), "%s to %s", from, to);
errno = sverrno;
error(buf);
}
}
if (rcount < 0) {
sverrno = errno;
(void)snprintf(buf, sizeof(buf), "%s to %s", from, to);
errno = sverrno;
error(buf);
}
}
void
wr_error(const char *str)
{
char errbuf[BUFSIZ];
int sverrno;
sverrno = errno;
(void)snprintf(errbuf, sizeof(errbuf),
"attempt to write %s failed", str);
errno = sverrno;
error(errbuf);
}
void
error(const char *str)
{
warn("%s", str);
bailout();
}
void
inconsistancy(void)
{
warnx("text files and databases are inconsistent");
warnx("re-build the databases without -u");
bailout();
}
void
bailout(void)
{
if ((clean & FILE_ORIG) != 0)
rm(oldpwdfile);
if ((clean & FILE_SECURE) != 0)
rm(pwd_Sdb_tmp);
if ((clean & FILE_INSECURE) != 0)
rm(pwd_db_tmp);
exit(EXIT_FAILURE);
}
/*
* Write entries to a database for a single user.
*
* The databases actually contain three copies of the original data. Each
* password file entry is converted into a rough approximation of a ``struct
* passwd'', with the strings placed inline. This object is then stored as
* the data for three separate keys. The first key * is the pw_name field
* prepended by the _PW_KEYBYNAME character. The second key is the pw_uid
* field prepended by the _PW_KEYBYUID character. The third key is the line
* number in the original file prepended by the _PW_KEYBYNUM character.
* (The special characters are prepended to ensure that the keys do not
* collide.)
*/
#define COMPACT(e) for (t = e; (*p++ = *t++) != '\0';)
void
putdbents(DB *dp, struct passwd *pw, const char *passwd, int flags,
const char *fn, int lineno, int dbflg, int uid_dbflg)
{
struct passwd pwd;
char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024], *p;
DBT data, key;
const char *t;
u_int32_t x;
int len;
memcpy(&pwd, pw, sizeof(pwd));
data.data = (u_char *)buf;
key.data = (u_char *)tbuf;
if (lorder != BYTE_ORDER) {
M_32_SWAP(pwd.pw_uid);
M_32_SWAP(pwd.pw_gid);
M_32_SWAP(pwd.pw_change);
M_32_SWAP(pwd.pw_expire);
}
/* Create insecure data. */
p = buf;
COMPACT(pwd.pw_name);
COMPACT(passwd);
memmove(p, &pwd.pw_uid, sizeof(pwd.pw_uid));
p += sizeof(pwd.pw_uid);
memmove(p, &pwd.pw_gid, sizeof(pwd.pw_gid));
p += sizeof(pwd.pw_gid);
memmove(p, &pwd.pw_change, sizeof(pwd.pw_change));
p += sizeof(pwd.pw_change);
COMPACT(pwd.pw_class);
COMPACT(pwd.pw_gecos);
COMPACT(pwd.pw_dir);
COMPACT(pwd.pw_shell);
memmove(p, &pwd.pw_expire, sizeof(pwd.pw_expire));
p += sizeof(pwd.pw_expire);
x = flags;
if (lorder != BYTE_ORDER)
M_32_SWAP(x);
memmove(p, &x, sizeof(x));
p += sizeof(flags);
data.size = p - buf;
/* Store insecure by name. */
tbuf[0] = _PW_KEYBYNAME;
len = strlen(pwd.pw_name);
memmove(tbuf + 1, pwd.pw_name, len);
key.size = len + 1;
if ((*dp->put)(dp, &key, &data, dbflg) == -1)
wr_error(fn);
/* Store insecure by number. */
tbuf[0] = _PW_KEYBYNUM;
x = lineno;
if (lorder != BYTE_ORDER)
M_32_SWAP(x);
memmove(tbuf + 1, &x, sizeof(x));
key.size = sizeof(x) + 1;
if ((*dp->put)(dp, &key, &data, dbflg) == -1)
wr_error(fn);
/* Store insecure by uid. */
tbuf[0] = _PW_KEYBYUID;
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
key.size = sizeof(pwd.pw_uid) + 1;
if ((*dp->put)(dp, &key, &data, uid_dbflg) == -1)
wr_error(fn);
}
int
deldbent(DB *dp, const char *fn, int type, void *keyp)
{
char tbuf[1024];
DBT key;
u_int32_t x;
int len, rv;
key.data = (u_char *)tbuf;
switch (tbuf[0] = type) {
case _PW_KEYBYNAME:
len = strlen((char *)keyp);
memcpy(tbuf + 1, keyp, len);
key.size = len + 1;
break;
case _PW_KEYBYNUM:
case _PW_KEYBYUID:
x = *(int *)keyp;
if (lorder != BYTE_ORDER)
M_32_SWAP(x);
memmove(tbuf + 1, &x, sizeof(x));
key.size = sizeof(x) + 1;
break;
}
if ((rv = (*dp->del)(dp, &key, 0)) == -1)
wr_error(fn);
return (rv);
}
int
getdbent(DB *dp, const char *fn, int type, void *keyp, struct passwd **tpwd)
{
static char buf[MAX(MAXPATHLEN, LINE_MAX * 2)];
static struct passwd pwd;
char tbuf[1024], *p;
DBT key, data;
u_int32_t x;
int len, rv;
data.data = (u_char *)buf;
data.size = sizeof(buf);
key.data = (u_char *)tbuf;
switch (tbuf[0] = type) {
case _PW_KEYBYNAME:
len = strlen((char *)keyp);
memcpy(tbuf + 1, keyp, len);
key.size = len + 1;
break;
case _PW_KEYBYNUM:
case _PW_KEYBYUID:
x = *(int *)keyp;
if (lorder != BYTE_ORDER)
M_32_SWAP(x);
memmove(tbuf + 1, &x, sizeof(x));
key.size = sizeof(x) + 1;
break;
}
if ((rv = (*dp->get)(dp, &key, &data, 0)) == 1)
return (rv);
if (rv == -1)
error(pwd_Sdb_tmp);
p = (char *)data.data;
pwd.pw_name = p;
while (*p++ != '\0')
;
pwd.pw_passwd = p;
while (*p++ != '\0')
;
memcpy(&pwd.pw_uid, p, sizeof(pwd.pw_uid));
p += sizeof(pwd.pw_uid);
memcpy(&pwd.pw_gid, p, sizeof(pwd.pw_gid));
p += sizeof(pwd.pw_gid);
memcpy(&pwd.pw_change, p, sizeof(pwd.pw_change));
p += sizeof(pwd.pw_change);
pwd.pw_class = p;
while (*p++ != '\0')
;
pwd.pw_gecos = p;
while (*p++ != '\0')
;
pwd.pw_dir = p;
while (*p++ != '\0')
;
pwd.pw_shell = p;
while (*p++ != '\0')
;
memcpy(&pwd.pw_expire, p, sizeof(pwd.pw_expire));
p += sizeof(pwd.pw_expire);
if (lorder != BYTE_ORDER) {
M_32_SWAP(pwd.pw_uid);
M_32_SWAP(pwd.pw_gid);
M_32_SWAP(pwd.pw_change);
M_32_SWAP(pwd.pw_expire);
}
*tpwd = &pwd;
return (0);
}
void
putyptoken(DB *dp, const char *fn)
{
DBT data, key;
key.data = (u_char *)__yp_token;
key.size = strlen(__yp_token);
data.data = (u_char *)NULL;
data.size = 0;
if ((*dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
wr_error(fn);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: pwd_mkdb [-BLps] [-c cachesize] [-d directory] [-u user] file\n");
exit(EXIT_FAILURE);
}